var sourceMap = require('source-map')
var fs = require('fs')
fs.readFile('../ios-release.bundle.map', 'utf8', function (err, data) {
  if (err) {
    console.error(data, err)
  }
  var smc = new sourceMap.SourceMapConsumer(data)
  console.log(smc.originalPositionFor({
    line: 981, // 報錯的行
    column: 2155 // 報錯的列
  }))
})
